边缘大脑干核的结构连接图谱
Simon Levinson1,2, Michelle Miller1, Ahmed Iftekhar1
1Department of Neurosurgery, David Geffen School of Medicine at the University of California, Los Angeles, Los Angeles, CA, United States.
Frontiers in neuroimaging
|August 9, 2023
概括
这项研究绘制了大脑干核与边缘区域的连接,揭示了对于理解情绪和奖励处理至关重要的模式. 这些发现有助于开发针对神经精神疾病的向神经调节疗法.
科学领域:
- 神经成像是一种神经成像.
- 神经解剖学是一个神经解剖学.
- 系统神经科学 系统神经科学
背景情况:
- 了解大脑干核与边缘皮层区域的结构连接对于针对抑郁,疼痛,成,焦虑和运动障碍的神经调节疗法至关重要.
- 大脑干中关键的单氨基核包括coeruleus位置 (noradrenergic),背面的拉菲核 (血清能) 和腹部的体区域 (dopaminergic).
- 由于研究挑战,这些关键脑干结构的精确解剖连接存在有限的体内人类数据.
研究的目的:
- 为了评估特定的大脑干核 (locus coeruleus,腹膜区域,水管灰色,背部拉菲核,核通道单一) 和边缘皮层区域之间的结构连接.
- 为未来的研究开发这些边缘脑干结构的群体平均MNI图谱.
- 提供对影响情绪,奖励和认知的大脑干-皮质路径的基本理解.
主要方法:
- 使用了197个人类连接体项目 (HCP) 结构性MRI数据集.
- 使用FSL (FMRIB软件库) 手动掩盖关键脑干核.
- 使用FSL的FMRIB扩散工具箱进行概率曲谱,以分析连接模式.
主要成果:
- 观察到从脑干核到杏仁体,海马体和背侧前额皮层 (DLPFC) 的高连接概率的一般趋势.
- 与轨道前皮层,核 (NAc),海马和岛屿的相对较低的连接性被注意到.
- 与其他研究核不同的是,Locus coeruleus和Nucleus tractus solitarius与杏仁核相比显示出显著更大的DLPFC连接性,而不是其他研究核.
结论:
- 单氨基和其它调节性脑干核广泛地投射到皮质边缘区域.
- 这项研究阐明了影响情绪,奖励和认知功能的关键脑干核的结构连接性.
- 对大脑干在情绪和奖励处理中的解剖学作用的更好理解,有助于开发针对神经精神疾病的向神经调节疗法.
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